JPS5345252B2 - - Google Patents
Info
- Publication number
- JPS5345252B2 JPS5345252B2 JP14704774A JP14704774A JPS5345252B2 JP S5345252 B2 JPS5345252 B2 JP S5345252B2 JP 14704774 A JP14704774 A JP 14704774A JP 14704774 A JP14704774 A JP 14704774A JP S5345252 B2 JPS5345252 B2 JP S5345252B2
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/18—Automatic scanning over a band of frequencies
- H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
- H03J7/24—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using varactors, i.e. voltage variable reactive diodes
- H03J7/26—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using varactors, i.e. voltage variable reactive diodes in which an automatic frequency control circuit is brought into action after the scanning action has been stopped
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/08—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using varactors, i.e. voltage variable reactive diodes
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Circuits Of Receivers In General (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14704774A JPS5345252B2 (US07223432-20070529-C00017.png) | 1974-12-17 | 1974-12-17 | |
| CA232,549A CA1025138A (en) | 1974-12-17 | 1975-07-30 | Automatic tuning apparatus |
| US05/601,283 US4008437A (en) | 1974-12-17 | 1975-08-04 | Automatic tuning apparatus |
| GB32525/75A GB1511359A (en) | 1974-12-17 | 1975-08-04 | Automatic electric tuning apparatus |
| DE2535305A DE2535305C3 (de) | 1974-12-17 | 1975-08-07 | Automatische Abstimmschaltung für Funkempfänger |
| IT26383/75A IT1042098B (it) | 1974-12-17 | 1975-08-14 | Apparecchiatura di sintonizzazione automatica impiegante un dispositi vo a reattanza variabile a tensione controllata |
| FR7526248A FR2310031A1 (fr) | 1974-12-17 | 1975-08-26 | Appareil d'accord automatique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14704774A JPS5345252B2 (US07223432-20070529-C00017.png) | 1974-12-17 | 1974-12-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5171011A JPS5171011A (US07223432-20070529-C00017.png) | 1976-06-19 |
| JPS5345252B2 true JPS5345252B2 (US07223432-20070529-C00017.png) | 1978-12-05 |
Family
ID=15421293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14704774A Expired JPS5345252B2 (US07223432-20070529-C00017.png) | 1974-12-17 | 1974-12-17 |
Country Status (7)
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5173815A (ja) * | 1974-12-24 | 1976-06-26 | Fujitsu Ten Ltd | Jidodochojushinki |
| JPS5181611U (US07223432-20070529-C00017.png) * | 1974-12-24 | 1976-06-30 | ||
| US4245348A (en) * | 1977-05-27 | 1981-01-13 | General Research Of Electronics, Inc. | Center frequency tuning system for radio-frequency signal receiver |
| JPS5456701A (en) * | 1977-10-14 | 1979-05-08 | Sanyo Electric Co Ltd | Preset receiving device |
| JPS593891B2 (ja) * | 1979-01-17 | 1984-01-26 | ソニー株式会社 | 受信検出回路 |
| JPS57171822A (en) * | 1981-04-15 | 1982-10-22 | Pioneer Electronic Corp | Automatic channel selector of tuner |
| EP0341238B1 (en) * | 1987-01-02 | 1993-12-08 | Motorola, Inc. | Automatic antenna tuning system for portable communication devices |
| CN115933237B (zh) * | 2022-12-16 | 2024-07-09 | 业成科技（成都）有限公司 | 显示装置及其操作方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2042439A1 (de) * | 1970-08-27 | 1972-03-02 | Wachholz W | Schaltungsanordnung zur automatischen Sendersuche und automatischen Scharfabstimmung in einem Hochfrequenzempfanger |
| CA975064A (en) * | 1970-12-07 | 1975-09-23 | Matsushita Electric Industrial Co., Ltd. | Tuning system |
| US3798553A (en) * | 1971-02-09 | 1974-03-19 | Matsushita Electric Ind Co Ltd | Frequency sweep device having two alternately swept oscillators |
| US3864636A (en) * | 1972-11-09 | 1975-02-04 | Tokyo Shibaura Electric Co | Local oscillation device for a television receiver set |
| CA1019855A (en) * | 1973-06-08 | 1977-10-25 | Yasuhiro Yamada | Automatic tuning apparatus |
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1974
- 1974-12-17 JP JP14704774A patent/JPS5345252B2/ja not_active Expired
-
1975
- 1975-07-30 CA CA232,549A patent/CA1025138A/en not_active Expired
- 1975-08-04 GB GB32525/75A patent/GB1511359A/en not_active Expired
- 1975-08-04 US US05/601,283 patent/US4008437A/en not_active Expired - Lifetime
- 1975-08-07 DE DE2535305A patent/DE2535305C3/de not_active Expired
- 1975-08-14 IT IT26383/75A patent/IT1042098B/it active
- 1975-08-26 FR FR7526248A patent/FR2310031A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2535305C3 (de) | 1980-04-10 |
| DE2535305A1 (de) | 1976-07-15 |
| CA1025138A (en) | 1978-01-24 |
| IT1042098B (it) | 1980-01-30 |
| DE2535305B2 (de) | 1979-08-09 |
| FR2310031A1 (fr) | 1976-11-26 |
| JPS5171011A (US07223432-20070529-C00017.png) | 1976-06-19 |
| US4008437A (en) | 1977-02-15 |
| FR2310031B1 (US07223432-20070529-C00017.png) | 1978-04-07 |
| GB1511359A (en) | 1978-05-17 |
